A quadrature volume RF coil for vertical B0 field open MRI systems

被引：3

作者：

Tomanek, Boguslaw ^{[1
,2
]}

Volotovskyy, Vyacheslav ^{[3
]}

Tyson, Randy ^{[3
]}

Yin, Donghui ^{[3
]}

Sharp, Jonathan ^{[1
]}

Blasiak, Barbara ^{[2
,4
]}

机构：

[1] Univ Alberta, Dept Oncol, Med Phys Div, Edmonton, AB, Canada

[2] Polish Acad Sci, Inst Nucl Phys, Krakow, Poland

[3] Cross Canc Inst, Dept Med Phys, Edmonton, AB, Canada

[4] Univ Calgary, Dept Neurosci, Calgary, AB, Canada

来源：

CONCEPTS IN MAGNETIC RESONANCE PART B-MAGNETIC RESONANCE ENGINEERING | 2016年 / 46卷 / 03期

关键词：

body RF coil; low-field MRI; quadrature RF coil; vertical field MRI; BIRDCAGE COIL; EFFICIENT; DESIGN;

D O I：

10.1002/cmr.b.21327

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cylindrical quadrature radio frequency (RF) coils are widely used in magnetic resonance imaging and spectroscopy due to their high sensitivity and field uniformity. However, the field geometry is unsuitable for use in low-field open magnetic resonance imaging (MRI) systems with vertical B-0 field configurations. Therefore, a new design is proposed. A quadrature RF coil that combines Alderman-Grant and Helmholtz designs was constructed to produce two independent modes, both orthogonal to the main magnetic field. The coil provides good RF homogeneity over a 20 x 15 x 15 cm volume and operates as both a transmit and receive coil. The application of the coil for 0.2 Tesla permanent magnet with a vertical B-0 field is shown. The proposed coil may be applied to MR imaging of larger objects at low vertical magnetic fields.

引用

页码：118 / 122

页数：5

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